Technical Difficulties in the Initial Cohort of Patients Treated with the Pipeline Device
| All Aneurysms (n=23) | First Group (n=10) | Second Group (n=13) | p Value | |
| Mean Maximum Aneurysm Sac Size (mm) | 11.4 | 15.4 | 8.2 | 0.015 |
| Mean Aneurysm Neck Size (mm) | 5.6 | 7.9 | 3.9 | 0.012 |
| Mean Number of Pipeline Devices Deployed | 1.3 | 1.7 | 1.1 | 0.095 |
| Number of Fusiform Aneurysms | 5 (21.7%) | 3 (30%) | 2 (15.4%) | 0.62 |
| Number of Saccular Aneurysms: | 18 (78.3%) | 7 (70%) | 11 (84.6%) | 0.62 |
| Post-Deployment Dyna-CTA | 15 (65.2%) | 6 (60%) | 9 (69.2%) | 0.69 |
| Balloon-Angioplasty of Pipeline Construct | 5 (21.7%) | 3 (30%) | 2 (15.4%) | 0.62 |
| Technical Difficulties During Pipeline Device Deployment | 5 (21.7%) | 4 (40%, 2 Pipeline construct stenoses, 2 Pipeline construct herniations into aneurysm) | 1 (7.7%, a proximal Pipeline construct endoleak) | 0.13 |
| New Permanent Neurological Deficit at Discharge | 1 (4.3%) | 1 (10%) | 0 | 0.43 |